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Young Star Caught Speeding

Young Star Caught Speeding

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Young Star Caught Speeding

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  1. Young Star Caught Speeding Alyssa A. Goodman Harvard-Smithsonian Center for Astrophysics Héctor G. Arce Caltech

  2. Galaxy Molecular Cloud Complex Star Cluster Extrasolar System Star & Planet Formation Disk + Jet Star-Forming “Globule”

  3. Most stars PV Ceph! 3 km/s 22 km/s Velocity compared to local environment How fast is “22 km/s”? 45,000 miles per hour (45 x a speeding bullet) 10-20 times faster than “most” stars move

  4. Exiled, but Accepted in New Land “Homeland” Ocean of Emptiness NGC 7023 PV Ceph “New Land”

  5. 3 light years Coming Soon PV Ceph: The Movie Goodman & Arce 2004, Figure 1

  6. HH knots far from source mark the ends of bipolar “jets” or “outflows” Stanke, McCaughrean & Zinnecker, 1999 What’s an “HH knot”?

  7. 3 light years Coming Soon PV Ceph: The Movie Goodman & Arce 2004, Figure 1

  8. Simulated Formation of a Star Cluster Bate, Bonnell & Bromm 2002

  9. Optical Image of NGC 7023 Dust Emission Map “Exit wound” NGC 7023 Tom Licha, 2002 PV Ceph Goodman & Arce 2004 Young StarCaughtSpeeding Away from Home

  10. “Immigration” Happens This discovery was a surprise. Underage stars can run away from home, fast! A proper “speeding study” is needed to understand what stars formed where, as a function of time.

  11. Optical Image of NGC 7023 First Evidence for a Young Star moving at such High Speed far from a Cluster Dust Emission Map gap NGC 7023 PV Ceph Tom Licha, 2002 Young StarCaughtSpeeding Away from Home Speed=22 km/s Age=0.5 million years Goodman & Arce 2004

  12. Optical Image of NGC 7023 First Evidence for a Young Star moving at such High Speed far from a Cluster gap NGC 7023 PV Ceph Tom Licha, 2002 Young StarCaughtSpeeding Away from Home Dust Emission Map Deceleration of Jets Speed=22 km/s Age=0.5 million years Goodman & Arce 2004

  13. Variability in “Gyulbudaghain's Nebula”(the fuzz surrounding PV Ceph) July ‘98 Oct/Nov ‘98 Oct ‘00 In 1 year, PV Ceph moves about the distance from the Sun to Jupiter (5 A.U.)